mental calculation

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. [[arithmetical|Arithmetical]] [[calculation]]s using only the human [[brain]], with no help from any supplies (such as pencil and paper) or devices such as a calculator.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.